Thailand · Geography · Easy
Answer: Isthmus of Kra — The Isthmus of Kra is the narrowest part of the Malay Peninsula, where the distance between the Andaman Sea and Gulf of Thailand is only about 44 kilometres.
The Isthmus of Kra is the narrowest part of the Malay Peninsula, where the distance between the Andaman Sea and Gulf of Thailand is only about 44 kilometres.